Ain Azreena

What is Database ? A database is a collection of  information  that is organized so that it can be easily accessed, managed and updated. Data is organized into rows, columns and tables, and it is indexed to make it easier to find relevant information. What is Database Management System? A database management system (DBMS) is system software for creating and managing  databases . The DBMS provides users and programmers with a systematic way to create, retrieve, update and manage  data .  Tables (Database) A database table is composed of records and fields that hold data. Tables are also called datasheets. Each table in a database holds data about a different, but related, subject. Figure 1 Record (Database) Data is stored in records.  A record is composed of fields and contains all the data about one particular person, company, or item in a database.  In this database, a record contains the data for one ...

OPERATING SYSTEM l  An operating system (OS), in its most general sense, is software that allows   user to run other applications on a computing device. l  a software program that enables the computer   hardware   to communicate and operate with the computer   software . l  Without a computer operating system, a computer and software programs would be useless. Windows ·    is a collection of programs known as an operating system (OS) that controls a PC (personal computer) . Windows' key benefits and features ·  Allows the user to interact with the computer (through the keyboard, mouse, microphone, etc.). ·  Controls the storage of data (images, files, music). ·  Controls hardware attached to the computer such as webcams, scanners and printers. ·  Helps to open and close programs (word processors, games, photo editors, etc.), and gives them part of the computer ’ s memory to allow them to work...